Year event occurred Vs. Estimated year event occurred
  1. It is appropriate to use the variable "year event occurred" as the explanatory variable because it is independent and not affected by another variable. "Estimated year event occurred" as the response variable because it is dependent and based off of the explanatory variable.
  2. If I guessed the correct year for each event, there would be two points on each year.
Union Workers
  1. I use the number of strikes and lockouts as the explanatory variable because it is independent. The percentage of union membership is the response variable because it is dependent on the number of strikes and lockouts.
  2. There is a positive association between the two variables.
  3. The second scatterplot shows correlation of the percentage of union workers and number of strikes and lockouts.
  4. There is a positive association between the two variables.
Income in 2010
Income in 2010
  1. The data shows the difference in incomes.
  2. There is no association between the variables because they do not cross pathes.
Income 2010
  1. There are no associtions in the data because they do not cross pathes.
  2. There are no points that stand away from the rest.

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